Constant f/2.8 Maximum Aperture:
The lens features a constant f/2.8 maximum aperture throughout the zoom range. This offers consistent performance and excellent light transmission, making it suitable for low-light conditions.
The optical layout includes three aspherical elements and two extra-low dispersion elements. These elements work together to reduce distortion and aberrations, providing a high degree of sharpness, clarity, and accurate rendering.
Super Integrated Coating (SIC):
A Super Integrated Coating has been applied to the lens elements to control flare and ghosting. This coating enhances contrast and color accuracy, particularly in challenging lighting conditions and backlit situations.
Wide-Angle Zoom for FX-Format:
Designed for FX-format sensors, the 17-35mm focal length range is versatile for a variety of photographic applications. It can also be used with DX-format models, providing a 25.5-52.5mm equivalent focal length range.
Silent Wave Motor (SWM):
The Silent Wave Motor enables fast, near-silent autofocus performance. It also allows for full-time manual focus override, catering to both stills and video applications.
The internal focusing design ensures that only the internal lens groups are moved during focusing. This maintains the overall length of the lens during use and promotes faster focusing speeds.
Rounded Nine-Blade Diaphragm:
The rounded nine-blade diaphragm contributes to a pleasing out-of-focus quality. This is particularly beneficial for creating images with shallow depth of field and selective focus techniques.